this is the yuri equiv of those really old guys that have young girlfriends because they are rich.
????? Where are you getting the idea of compensated dating from? You're saying this as if the younger one is first person to ever have a thing for grannies. Even amano shuninta wrote about it.
Don't think they were talking about compensated dating, more like a Sugar Daddy/Trophy Wife thing.
Either way, I'm going to go find some extra strength eye bleach now...